TCS230 Color Sensor Module User s Guide

Transcription

1 TCS230 Color Sensor Module User s Guide DC-SS501_Ver1.0

2 TCS230 COLOR SENSOR MODULE USER S GUIDE Table of Contents Chapter 1. Overview Overview Features Applications Pin Descriptions... 2 Chapter 2. Hardware Detail Absolute Maximum Ratings Operating Ratings Color Characteristics Interface Characteristics Digital Interface Characteristics Analog Interface Characteristics... 5 Chapter 3. Application Notes Principle of How TCS230 Identifies Different Colors White Balance Test Mode and Normal Mode... 7 Chapter 4. Mechanical Drawing...8 Chapter 5. Contact Us...9 DC-SS501_Ver1.0_Page i

3 TCS230 Color Sensor Module NOTES: Product Version : Ver 1.0 Document Version : Ver 1.0 DC-SS501_Ver1.0_Page ii Sure Electronics Inc

4 TCS230 COLOR SENSOR MODULE USER S GUIDE Chapter 1. Overview 1.1 Overview 1.2 Features Welcome to use TCS230 Color Sensor Module by Sure Electronics. Employing TCS230 of TAOS as the signal acquisition chip, this module is quite available in color detection and sorting operations. It is also useful by providing both digital and analog signal outputs. DC: 3.3V to 5V Fast response time Supplied 6mm lens with an IR filters Analog & digital output Analog: RGB voltage signal linear output Digital: UART half duplex, SPI slave mode DIP-like packaging, which facilitates system integration FIGURE 1-1 OVERVIEW 1.3 Applications Portable color identification system Color monitor to color printing Process control to printed materials LED testing Other occasions requiring color detection and sorting operations DC-SS501_Ver1.0_Page 1

5 TCS230 Color Sensor Module 1.4 Pin Descriptions FIGURE 1-2 BACK VIEW TABLE 1-1 PIN DESCRIPTION Label Pin Function Label Pin Function S1 1 Analog output control terminal 1 VCC 2 Power input S2 3 Analog output control terminal 2 VCC 4 Power input RXD 5 UART Received Data GND 6 Ground TXD 7 UART Transmitted Data GND 8 Ground /CS 9 SPI enable. Vref 10 Reference voltage output SCK 11 SPI clock GND 12 Ground SDO 13 SPI data output Vcolor 14 Color voltage output SDI 15 SPI data input GND 16 Ground DC-SS501_Ver1.0_Page Sure Electronics Inc

6 TCS230 COLOR SENSOR MODULE USER S GUIDE Chapter 2. Hardware Detail 2.1 Absolute Maximum Ratings Storage temperature:-20 to 85 C Storage humidity range: 0 to 90 % RH Supply voltage: DC 5.5 V 2.2 Operating Ratings Temperature operating range:-15 to 60 C Humidity operating range: 0 to 85% RH Supply voltage: DC 3.3V to 5V 2.3 Color Characteristics TABLE 2-1 COLOR CHARACTERISTICS Parameter Min. Typ. Max. Unit. Color measuring range 350 / 750 nm Luminance range 100 / / lux Response time / 500 / ms Note: You can refer to TCS230 datasheet for more information about Color Characteristics. 2.4 Interface Characteristics Digital Interface Characteristics D-1.Digital Interface I/O Electrical Characteristics : Vin=3.3V to 5.0V TABLE 2-2 DIGITAL INTERFACE CHARACTERISTICS Parameter Min. Typ. Max. Units Input low voltage / / 0.2Vin V Input high voltage 0.8Vin / / V Output low voltage / / 0.6 V Output high voltage Vin 0.9 / / V D-2. UART Interface: DC-SS501 has an UART interface and is able to communicate with any host that has an UART interface. 1 UART Properties: Baud rate: 9600bps Start bit: 1bit Data bit: 8bits Parity bit: 0bit Stop bit: 1bit 2 UART Command: DC-SS501_Ver1.0_Page 3

7 TCS230 Color Sensor Module TABLE 2-3 UART COMMAND Command Function wb Start white balance tm Enter test mode nm Enter normal mode r Access current Red value g Access current Green value b Access current Blue value Note: 1. All UART commands shall start with $sure and followed by a space (0x20) and end with enter (0x0d, 0x0a). 2. All UART commands shall be expressed in ASCII. 3. All UART commands are not case-sensitive. 3 Examples: 1. Start white balance 2. Access current Red value 3. Enter test mode 4. Enter normal mode 5. Prompt of bad commands Unrecognized guide word, returns Bad command! Unknown command! Incorrect command returns Unknown command! D-3.SPI Interface: DC-SS501 has a SPI interface (Slave Mode), which can be used conveniently for the communication with any host that has SPI interface. 1 SPI Command: DC-SS501_Ver1.0_Page Sure Electronics Inc

8 Hardware Detail TABLE 2-4 SPI COMMAND Command Function 0x c0 Return current Red value (0~255) 0x c1 Return current Green value (0~255) 0x c2 Return current Blue value (0~225) 2 Examples: TABLE 2-5 EXAMPLES Received command Return value Descriptions 0xc0 0xF5 The current Red value is 245 0xc1 0x10 The current Green value is 16 0xc2 0x3D The current Blue value is 61 3 SPI Timing: FIGURE 2-1 SPI TIMING Note: 1. The SCK frequency of SPI interface shall be in a range from 3 khz to 2MHz. 2. /CS is in low level only when SPI interface communication is in progress and shall be in high level in any other situations. 3. The interval of two successive commands shall be greater than 0.2s. 4. SPI interface in this version doesn t have the function of white balance. UART interface must be used. 5. SPI in this version is not available in the test mode Analog Interface Characteristics DC-SS501 is integrated with an analog output set, which can work only in the normal mode. A-1. Analog Output Selection Control The analog output of DC-SS501 controls the type of Color output via two selection terminals: TABLE 2-6 SELECTION TERMINALS S1 S2 Color output 0 0 Red 0 1 Green 1 0 Blue 1 1 Off A-2.Color Output Typical Characteristics DC-SS501_Ver1.0_Page 5

9 TCS230 Color Sensor Module TABLE 2-7 COLOR OUTPUT LOOK-UP TABLE DC-SS501_Ver1.0_Page Sure Electronics Inc

10 TCS230 COLOR SENSOR MODULE USER S GUIDE Chapter 3. Application Notes 3.1 Principle of How TCS230 Identifies Different Colors According to the induction principle of the three primary colors which create various other colors in nature, once the value of the three primary colors is confirmed, the color of the tested object is known. When a color filter is selected, TCS230 just allows the corresponding color to pass. E.g. when the red filter is selected, only red light can pass through it and the red light intensity can be obtained. So is the green and blue filter. Knowing the value of RGB helps people gain the color of the light which is projected onto TCS230 since each color corresponds to only one value of RGB. 3.2 White Balance Simply speaking, White Balance is to tell the system what white is. In theory, white is a mixture of red, green and blue which are equivalent. Actually, the three primary colors are not in the absolutely equivalent value and TCS230 senses differently to the three basic colors so that RGB outputs are not equal. Hence white balance should be adjusted before test to enable TCS230 get the equivalent value of RGB of white which will be tested. If TCS230 is used for the first or to identify the restart of the module and light replacement, white balance should be adjusted for the follow-up color identification. 3.3 Test Mode and Normal Mode Test mode and normal mode are set to meet different customers need. In test mode, it will be slow that UART interface outputs the value of RGB frequency outputted by TCS230 (The specific meaning of RGB frequency can be read in TCS230 Data Sheet). In addition, neither SPI nor analog interface is available. In normal mode, UART interface outputs the value of RGB (0~255) which is calibrated by White Balance and both SPI interface and analog interface works. DC-SS501_Ver1.0_Page 7

11 TCS230 COLOR SENSOR MODULE USER S GUIDE Chapter 4. Mechanical Drawing FIGURE 4-1 MECHANICAL DRAWING DC-SS501_Ver1.0_Page 8

12 TCS230 COLOR SENSOR MODULE USER S GUIDE Chapter 5. Contact Us Sure Electronics Co., Ltd. 5F, Zone A, Qinhuai Technology Innovation Center DaMing Rd (ZIP:210022) Nanjing P.R.China Tel: (For technical questions only) (English service, from GMT1-10AM) Fax: Website: DC-SS501_Ver1.0_Page 9